Determine whether or not each of the following terms

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Does the use of cell phones lead to a higher incidence of brain cancer? People with brain cancer were matched with people who did not have brain cancer on age, gender, and living environment. Each participant in the study was asked to answer questions about previous life experiences and exposures.  Determine whether or not each of the following terms applies to this observational study.

a. prospective

b. retrospective

c. case-control study

Reference no: EM13575695

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